空呼器在使用中,如遇面罩结雾可通过()除雾。
A.关闭节气阀
B.深呼吸
C.打开冲泄阀
D.快速呼吸
参考答案:B, C
治愈后再考虑手术
A.卧床留观察2小时以上B.避免房事过度C.阴囊托D.避孕2~3个月E.避免重体力劳动为预防下列并发症,须采取上述哪项预防措施
The teacher told her Senior 3 students that it was important to ___________ time for relaxation under great pressure.
A.set up
B.set about
C.set down
D.set aside